The genera Eneremius SAUSSURE, Lithidium UVAROV and Lithidiopsis DIRSH are revised. Lithidium becomes a junior synonym of Eneremius. Eneremius includes seven species previously described (some under Lithidium) and 12 new species. Lithidiopsis includes two previously described species (one under Lithidium) and two new species. A new genus Tsautettix, in the the Lentulidae, is erected to include one species previously placed under Eneremius (namaquensis BROWN), and ten new species. The new genus Tanquata, also in the Lentulidae, is erected to include two new species from Tanqua Karoo.